I can affirm that this is my own experience.
Even if you booked the residence and lived there for quite a while, when someone is willing to pay a higher price to live in this residence, you will got kicked out immediately.
My own experience is that the house owner forced us to leave in two days after someone agreed to pay him a higher amount of money to live in this Daerim Apartment in YongSan.
Moreover, when you are forced to leave, you are required to clean up the whole apartment for like 5 times until the owner agreed that it's ok.

Therefore I do not recommend you all to live in this residence because of this unethical manner. If you can bear the risk of having nowhere to stay in a few hours because of this selfish, unethical, disrespectful manner, it shouldn't be a problem.